COP, LOP, and LCD are terms related to lifts (elevators) that refer to specific components or features:

• COP (Car Operating Panel): This is the control panel inside the lift cabin that allows passengers to select their desired floor. It typically includes buttons or a touchscreen interface with floor numbers and other controls like emergency buttons or alarms.
• LOP (Landing Operating Panel): LOPs are located outside the lift cabin, usually beside the lift doors on each floor. They serve the same function as the COP but are used by passengers waiting to call the lift to their floor. LOPs often feature directional buttons (up and down arrows) and indicators showing the lift's current position or status.
• LCD (Liquid Crystal Display): LCD displays are commonly used in modern lift cabins and LOPs. They provide visual feedback such as floor numbers, directional arrows indicating the lift's movement, and informational messages or announcements. LCDs are clear and easy to read, enhancing user experience and providing important operational information.

These components are integral to the operation and user interface of lifts, ensuring efficient navigation and communication between passengers and the lift system.